Umi ni Iru no wa...

A young woman named Yumi finds herself drawn to the sea, where she encounters a mysterious and beautiful man. Their meeting sets off a chain of events that blur the lines between reality and fantasy, as Yumi becomes entangled in a world of longing and strange occurrences.

As Yumi navigates her feelings and the enigmatic presence of the man, she must confront the secrets hidden beneath the surface of her everyday life. The story unfolds in a series of interconnected episodes that explore themes of love, loss, and the haunting pull of the ocean.